Transient electron energy-loss spectroscopy of optically stimulated gold nanoparticles using picosecond pulsed electron beam

Makoto Kuwahara, Lira Mizuno, Rina Yokoi, Hideo Morishita, Takafumi Ishida, Koh Saitoh, Nobuo Tanaka, Shota Kuwahara, Toshihide Agemura

Applied Physics Letters   Vol. 121 ( 14 ) page： 143503   2022.10

High-quality resonances in terahertz composite slabs based on metal gratings

Liu, DJ; Yu, X; Wu, F; Cao, J; Zhao, YL; Shi, H; Xiao, SY; Kuwahara, M; Itoigawa, F; Ono, S; Chen, L; Liu, F

JOURNAL OF OPTICS   Vol. 24 ( 10 )   2022.10

Nanoscale Characteristics of a Room-Temperature Coexisting Phase of Magnetic Skyrmions and Antiskyrmions for Skyrmion-Antiskyrmion-Based Spintronic Applications

Shimizu, D; Nagase, T; So, YG; Kuwahara, M; Ikarashi, N; Nagao, M

ACS APPLIED NANO MATERIALS   Vol. 5 ( 9 ) page： 13519 - 13528   2022.9

Generation of sub-100 fs electron pulses for time-resolved electron diffraction using a direct synchronization method

Takubo, K; Banu, S; Jin, SC; Kaneko, M; Yajima, W; Kuwahara, M; Hayashi, Y; Ishikawa, T; Okimoto, Y; Hada, M; Koshihara, S

REVIEW OF SCIENTIFIC INSTRUMENTS   Vol. 93 ( 5 )   2022.5

Improvement of type-I method for observing magnetic contrast using scanning electron microscope under tilting-deceleration condition

Morishita, H; Kohashi, T; Yamamoto, H; Kuwahara, M

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS   Vol. 546   2022.3

Comment on "Intensity Interference in a Coherent Spin-Polarized Electron Beam" Reply

Kuwahara, M; Yoshida, Y; Nagata, W; Nakakura, K; Furui, M; Ishida, T; Saitoh, K; Ujihara, T; Tanaka, N

PHYSICAL REVIEW LETTERS   Vol. 127 ( 22 )   2021.11

Photoinduced oxygen transport in cobalt double-perovskite crystal EuBaCo₂O_5.39

Hada, M; Ohmura, S; Ishikawa, T; Saigo, M; Keio, N; Yajima, W; Suzuki, T; Urushihara, D; Takubo, K; Masaki, Y; Kuwahara, M; Tsuruta, K; Hayashi, Y; Matsuo, J; Yokoya, T; Onda, K; Shimojo, F; Hase, M; Ishihara, S; Asaka, T; Abe, N; Arima, TH; Koshihara, SY; Okimoto, Y

APPLIED MATERIALS TODAY   Vol. 24   2021.9

Observation of domain wall bimerons in chiral magnets

Nagase, T; So, YG; Yasui, H; Ishida, T; Yoshida, HK; Tanaka, Y; Saitoh, K; Ikarashi, N; Kawaguchi, Y; Kuwahara, M; Nagao, M

NATURE COMMUNICATIONS   Vol. 12 ( 1 )   2021.6

Performance of a silicon-on-insulator direct electron detector in a low-voltage transmission electron microscope

T. Ishida, A. Shinozaki, M. Kuwahara, T. Miyoshi, K. Saitoh, Y. Arai

Microscopy   Vol. 70 ( 3 ) page： 321 - 325   2021.6

Intensity Interference in a Coherent Spin-Polarized Electron Beam

Makoto Kuwahara, Yuya Yoshida, Wataru Nagata, Kojiro Nakakura, Masato Furui, Takafumi Ishida, Koh Saitoh, Toru Ujihara, and Nobuo Tanaka

  Vol. 126 ( 12 ) page： 125501   2021.3

Development of angle-resolved spectroscopy system of electrons emitted from a surface with negative electron affinity state

Ichihashi, F; Dong, XY; Inoue, A; Kawaguchi, T; Kuwahara, M; Ito, T; Harada, S; Tagawa, M; Ujihara, T

REVIEW OF SCIENTIFIC INSTRUMENTS   Vol. 89 ( 7 )   2018.7

Coherent pulse beam in spin-polarized TEM using an NEA photocathode

Kuwahara, M; Ujihara, T; Saitoh, K; Tanaka, N

2018 31ST INTERNATIONAL VACUUM NANOELECTRONICS CONFERENCE (IVNC)     2018

Temperature dependence of carrier relaxation time in gallium phosphide evaluated by photoemission measurements

Ichihashi, F; Kawaguchi, T; Dong, XY; Kuwahara, M; Ito, T; Harada, S; Tagawa, M; Ujihara, T

AIP ADVANCES   Vol. 7 ( 11 )   2017.11

Membrane molecule, bouncer regulates sperm binding activity in immature oocytes in a viviparous teleost species Poecilia reticulata (guppy) Reviewed

Junki Yoshida, Yuki Tajika, Kazuko Uchida, Makoto Kuwahara, Kaori Sano, Takayuki Suzuki, Eiichi Hondo, Atsuo Iida

Development, Growth & Differentiation     2024

Time-resolved measurement using spin-polarized pulsed electron beam in transmission electron microscopy Invited Reviewed International coauthorship

Makoto Kuwahara

Vacuum and Surface Science   Vol. 66 ( 12 )   2023.12

原子の動きを「コマ撮り」する小型装置の開発 Invited Reviewed

羽田真毅，田久保耕，矢嶋渉，桒原真人，腰原伸也

Isotope News   ( 786 ) page： 10 - 14   2023.4

Carbonization of a Molybdenum Substrate Surface and Nanoparticles by a One-Step Method of Femtosecond Laser Ablation in a Hexane Solution Reviewed International coauthorship

Yoshiki Tanaka, Xi Yu, Shusaku Terakawa, Takafumi Ishida, Koh Saitoh, Hongwei Zhang, Toru Asaka, Fumihiro Itoigawa, Makoto Kuwahara, Shingo Ono

ACS Omega     2023.2

Carbonization of a Molybdenum Substrate Surface and Nanoparticles by a One-Step Method of Femtosecond Laser Ablation in a Hexane Solution

Tanaka, Y; Yu, X; Terakawa, S; Ishida, T; Saitoh, K; Zhang, HW; Asaka, T; Itoigawa, F; Kuwahara, M; Ono, S

ACS OMEGA     2023.2

Brightness evaluation of pulsed electron gun using negative electron affinity photocathode developed for time-resolved measurement using scanning electron microscope Reviewed

1. H. Morishita, T. Ohshima, K. Otsuga, M. Kuwahara, T. Agemura, Y. Ose

Ultramicroscopy   Vol. 230   page： 113386   2021.9

Time-resolved Transmission Electron Microscope Using Pulsed Electron Waves Invited Reviewed

Makoto Kuwahara, Rina Yokoi, Lira Mizuno, Nobutaka Togashi, Yuya Yoshida, Wataru Nagata, Masato Furui, Kojiro Nakakura and Takafumi Ishida

Kenbikyo   Vol. 55 ( 3 ) page： 131 - 138   2020.12

Room-temperature magnetic skyrmion in epitaxial thin films of Fe_2-xPd_xMo_3N with the filled beta-Mn-type chiral structure

  Vol. 117 ( 14 )   2020.10

Localized Surface Plasmon Resonance-Induced Welding of Gold Nanotriangles and the Local Plasmonic Properties for Multicolor Sensing and Light-Harvesting Applications International journal

Shota Kuwahara, Yuka Narita, Lila Mizuno, Hiroki Kurotsu, Hiroki Yoshino, and Makoto Kuwahara

ACS Applied Nano Materials   Vol. 3 ( 6 ) page： 5172 - 5177   2020.6

Resolution improvement of low-voltage scanning electron microscope by bright and monochromatic electron gun using negative electron affinity photocathode International journal

H. Morishita, T. Ohshima, M. Kuwahara, Y. Ose, T. Agemura

Journal of Applied Physics   Vol. 127 ( 16 ) page： 164902   2020.4

Smectic Liquid-Crystalline Structure of Skyrmions in Chiral Magnet Co_8.5Zn_7.5Mn₄(110) Thin Film

  Vol. 123 ( 13 )   2019.9

スピン偏極パルス透過電子顕微鏡の開発 Reviewed

桑原真人

まてりあ   Vol. 58 ( 5 ) page： 269-274   2019.5

Coherence of a pulsed electron beam extracted from a semiconductor photocathode in transmission electron microscope Reviewed

M. Kuwahara, K. Aoki, H. Suzuki, H. Asano, T. Ujihara, K. Saitoh, N. Tanaka

European Microscopy Congress 2016     2016.12

The Boersch effect in a picosecond pulsed electron beam emitted from a semiconductor photocathode Reviewed

Makoto Kuwahara, Yoshito Nambo, Kota Aoki, Kensuke Sameshima, Xiuguang Jin, Toru Ujihara, Hidefumi Asano, Koh Saitoh, Yoshikazu Takeda, and Nobuo Tanaka

Applied Physics Letters   Vol. 109   page： 013108   2016.7

Ultrafast Time-Resolution and the Beam Quality in Spin-Polarized Pulsed-TEM Invited Reviewed

M. Kuwahara, T. Ujihara, H. Asano, K. Saitoh, N. Tanaka

  Vol. 50 ( 3 ) page： 151-155   2016.1

Measurement of energy distribution of conduction electrons in superlattice by visible-light photoemission spectroscopy Reviewed

F. Ichihashi, K. Nishitani, X. Dong, T. Kawaguchi, M. Kuwahara, T. Ito, S. Harada, M. Tagawa, T.Ujihara

2015 IEEE 42nd Photovoltaic Specialist Conference (PVSC)     page： 1-4   2015.12

Coherences of spin-polarized and pulsed electron beam extracted from a semiconductor photocathode in TEM Reviewed

M. Kuwahara, K. Sameshima, K. Aoki, H. Asano, T. Ujihara, K. Saitoh, N. Tanaka

Microscopy   Vol. 64 ( 1 ) page： i17   2015.10

Photoemission lifetime of a negative electron affinity gallium nitride photocathode Reviewed

T. Nishitani, M. Tabuchi, H. Amano, T. Maekawa, M. Kuwahara, T. Meguro

Journal of Vacuum Science & Technology B   Vol. 32   page： 06F901   2014.11

Coherence of a spin-polarized electron beam emitted from a semiconductor photocathode in a transmission electron microscope Reviewed

M. Kuwahara, S. Kusunoki, Y. Nambo, X. G. Jin, T. Ujihara, H. Asano, Y. Takeda, N. Tanaka

Applied Physics Letters   Vol. 105   page： 193101   2014.11

Direct measurement of conduction miniband structure in superlattice by visible-light photoemission spectroscopy Reviewed

F. Ichihashi, D. Shimura, K. Nishitani, T. Kawaguchi, M. Kuwahara, T. Ito, S. Harada, H. Katsuno, M. Tagawa, T. Ujihara

2014 IEEE 40th Photovoltaic Specialist Conference (PVSC)     2014.10

Experimental investigation of an optimum configuration for a high-voltage photoemission gun for operation > 500 kV Reviewed

N. Nishimori, R. Nagai, S. Matsuba, R. Hajima, M. Yamamoto, Y. Honda, T. Miyajima, H. Iijima, M. Kuriki, M. Kuwahara

Phys. Rev. ST. Accel. Beam   Vol. 17   page： 053401   2014.5

Spatial and temporal coherence in spin-polarized transmission electron microscopy Reviewed

M, Kuwahara, S. Kusunoki, Y. Nambo, K. Sameshima, K. Saitoh, T. Ujihara, H. Asano, Y. Takeda, N. Tanaka

AMTC Letters   Vol. 4   page： 262   2014.5

Nano-second Time-Resolved Measurement in Spin-Polarized Pulse TEM Reviewed

Y. Nambo, M. Kuwahara, S. Kusunoki, K. Sameshima, K. Saitoh, T. Ujihara, H. Asano, Y. Takeda, N. Tanaka

AMTC Letters   Vol. 4   page： 256   2014.5

Electron spectroscopy of conduction electrons excited by visible light utilizing NEA surface Reviewed

F. Ichihashi. D. Shimura, K. Nishitani, M. Kuwahara, T. Ito, S. Harada, M. Tagawa, T. Ujihara

2013 IEEE 39th Photovoltaic Specialists Conference (PVSC)     2014.2

Ultrahigh-resolution direct observation of mini-bands formed in InGaAs/AlGaAs superlattice Reviewed

D. Shimura, F. Ichihashi, K. Nishitani, S. Harada, M. Kuwahara, T. Ito, M. Matsunami, S. Kimura, T. Sakai, M. Tagawa, T. Ujihara

2013 IEEE 39th Photovoltaic Specialists Conference (PVSC)     2014.2

Progress in photocathode dc gun at the compact ERL Reviewed

N. Nishimori, R. Nagai, S. Matsuba, R. Hajima, M. Yamamoto, Y. Honda, T. Miyajima, H. Iijima, M. Kuriki, M. Kuwahara

Proceedings of 35th International Free-Electron Laser Conference     page： 184   2013.8

Temporal response measurements of GaAs-based photocathodes Reviewed

Y. Honda, S. Matsuba, X. G. Jin, T. Miyajima, M. Yamamoto, T. Uchiyama, M. Kuwahara, Y. Takeda

Jpn. J. Appl. Phys   Vol. 52   page： 086401   2013.7

Phase-locking of oscillating images using laser-induced spin-polarized pulse TEM Reviewed

Makoto Kuwahara, Yoshito Nambo, Soichiro Kusunoki, Xiuguang Jin, Koh Saitoh, Hidefumi Asano, Toru Ujihara, Yoshikazu Takeda, Tsutomu Nakanishi, and Nobuo Tanaka

Microscopy     2013.6

Generation of a 500-keV electron beam from a high voltage photoemission gun Reviewed

Nobuyuki Nishimori, Ryoji Nagai, Shunya Matsuba, Ryoichi Hajima, Masahiro Yamamoto, Tsukasa Miyajima, Yosuke Honda, Hokuto Iijima, Masao Kuriki, and Makoto Kuwahara

Applied Physics Letters   Vol. 102   page： 234103   2013.6

Temporal Generation of a 500-keV electron beam from a high voltage photoemission gun Reviewed

N. Nishimori, R. Nagai, S. Matsuba, R. Hajima, M. Yamamoto, Y. Honda, T. Miyajima, H. Iijima, M. Kuriki, M. Kuwahara

Appl. Phys. Lett.   Vol. 102   page： 234103   2013.6

Development of Spin-Polarized and Pulsed Transmission Electron Microscope Invited Reviewed

Makoto Kuwahara, Tsutomu Nakanishi, Yoshikazu Takeda, Nobuo Tanaka

KENBIKYO   Vol. 48 ( 1 ) page： 3-8   2013.6

Progress in a photocathode DC gun at the compact ERL

N. Nishimori, R. Nagai, S. Matsuba, R. Hajima, M. Yamamoto, Y. Honda, T. Miyajima, H. Iijima, M. Kuriki, M. Kuwahara

FEL 2013: Proceedings of the 35th International Free-Electron Laser Conference     page： 184-188   2013.1

Development of a photoemission dc gun at JAEA Reviewed

N. Nishimori, R. Nagai, S. Matsuba, R. Hajima, M. Yamamoto, Y. Honda, T. Miyajima, H. Iijima, M. Kuriki, M. Kuwahara

Proceedings of 34th International Free Electron Laser Conference     page： 161   2012.8

30-kV spin-polarized transmission electron microscope using GaAs-GaAsP strained superlattice photocathode Reviewed

M Kuwahara, S. Kusunoki, X. G. Jin, T. Nakanishi, Y Takeda, K Saitoh, T Ujihara, H Asano, N Tanaka

Applied Physics Letters   Vol. 101   page： 033102   2012.7

Development of Spin-Polarized and Pulsed TEM Reviewed

M Kuwahara, F. Ichihashi, S. Kusunoki, Y Takeda, K Saitoh, T Ujihara, H Asano, T. Nakanishi, N Tanaka

Journal of Physics: Conference Series   Vol. 371   page： 012004   2012.7

Spin-polarized TEM using an NEA photocathode Reviewed

M. Kuwahara

Advanced Microscopy and Theoretical Calculations Letters   Vol. 3   page： 180   2012.5

Mean Transverse Energy Measurement of Negative Electron Affinity GaAs-Based Photocathode Reviewed

S. Matsuba, Y. Honda, X. G. Jin, T. Miyajima, M. Yamamoto, T. Uchiyama, M. Kuwahara, Y. Takeda

Japanese Journal of Applied Physics   Vol. 51   page： 046402   2012.3

Development of spin-polarized transmission electron microscope Reviewed

M. Kuwahara, Y. Takeda, K. Saitoh, T. Ujihara, H. Asano, T. Nakanishi, N Tanaka

Journal of Physics: Conference Series   Vol. 298   page： 012016   2011.6

Development of a 500-kV photocathode DC gun for ERLs Reviewed

N Nishimori, R Nagai, M Yamamoto, Y Honda, T Miyajima, H Iijima, M Kuriki, M Kuwahara, S Okumi, T Nakanishi, R Hajima

Journal of Physics: Conference Series   Vol. 298   page： 012005   2011.6

Dark-lifetime degradation of GaAs photo-cathode at higher temperature Reviewed

M. Kuriki, C. Shonaka, H. Iijima, D. Kubo, H. Okamoto, H. Higaki, K. Ito, M. Yamamoto, T. Konomi, S. Okumi, M. Kuwahara, T. Nakanishi

Nucl. Instr. and Meth.A   Vol. 637 ( 1 ) page： S87-S90   2011.5

Pulsed spin-polarized electron source toward a transmission electron microscope

M. Kuwahara, T. Nakanishi, N. Tanaka, Y. Takeda, H. Asano, K. Saito, T. Ujihara

Proceedings of The 17th IFSM International Microscopy Congress     page： I20   2010.9

High-voltage testing of a 500-kV dc photocathode electron gun Invited Reviewed

R. Nagai, R. Hajima, N. Nishimori, T. Muto, M. Yamamoto, Y. Honda, T. Muyajima, H. Iijima, M. Kuriki, M. Kuwahara, S. Okumi, T. Nakanishi

Review of Scientific Instruments   Vol. 81   page： 033304   2010

Single electron spin resonance in a g-factor controlled semiconductor quantum dot Reviewed

T. Kutsuwa, M. Kuwahara, K. Ono, H. Kosaka

Physica E -Low-Dimensional System & Nano Structure   Vol. 42 ( 4 ) page： 821-824   2010

Single charge detection of an electron created by a photon in a g-factor engineered quantum dot Reviewed

M. Kuwahara, T. Kutsuwa, K. Ono, H. Kosaka

Applied Physics Letters   Vol. 96 ( 16 ) page： 163107   2010

High brightness and highly polarized electron beam for real-time measurement in SPLEEM Reviewed

M. Kuwahara, A. Mano, Y. Nakagawa, S. Okumi, T. Nakanishi, M. Suzuki, T. Yasue, T. Koshikawa, X. Jin, N. Yamamoto, T. Ujihara, Y. Takeda, M. Yamamoto, T. Ohshima, T. Kohashi, T. Saka, T. Kato, H. Horinaka

Proceedings of 7th International Symposium on Atomic Level Characterizations for New Materials and Devices 09     page： 84   2009.12

Development of a 500-kV photo-cathode DC gun for the ERL light sources in Japan Reviewed

N. Nishimori, R. Nagai, H. Iijima, R. Hajima, M. Yamamoto, T. Muto, Y. Honda, T. Miyajima, M. Kuwahara, S. Okumi, T. Nakanishi

Proceedings of Free Electron Laser 2009     page： 277   2009.9

Real time magnetic imaging by spin-polarized low energy electron microscopy with highly spin-polarized and high brightness electron gun Reviewed

M. Suzuki, M. Hashimoto, T. Yasue, T. Koshikawa, Y. Nakagawa, T. Konomi, A. Mano, N. Yamamoto, M. Kuwahara, M. Yamamoto, S. Okumi, T. Nakanishi, X. G. Jin, T. Ujihara, Y. Takeda, T. Kohashi, T. Ohshima, T. Saka, T. Kato, H. Horinaka

Applied Physics Express   Vol. 3   page： 026601   2009

Electrical field control of trions in the structure for quantum media conversion

W. Ueno, H. Kosaka, T. Kutsuwa, M. Kuwahara, Y. Mitsumori, K. Edamatsu

Proceedings of 2008 International Symposium on Physics of Quantum Technology     page： 74   2008

ESR measurements of quantum dot

T. Kutsuwa, M. Kuwahara, K. Ono, H. Kosaka

Proceedings of 2008 International Symposium on Physics of Quantum Technology     page： 72   2008

Optical responses of quantum transport for single photo-electron detection

M. Kuwahara, T. Kutsuwa, K. Ono, H. Kosaka

Proceedings of 2008 International Symposium on Physics of Quantum Technology     page： 70   2008

High brightness and high polarization electron source using transmission photocathode with GaAs-GaAsP superlattice layers Reviewed

N. Yamamoto, T. Nakanishi, A. Mano, Y. Nakagawa, S. Okumi, M. Yamamoto, T. Konomi, X. Jin, T. Ujihara, Y. Takeda, T. Ohshima, T. Saka, T. Kato, H. Horinaka, T. Yasue, T. Koshikawa, M. Kuwahara,

Journal of Applied Physics   Vol. 103   page： 064905-1-7   2008

High field gradient polarized electron gun for ILC Reviewed

M. Yamamoto, N. Yamamoto, T. Nakanishi, S. Okumi, M. Kuwahara, K. Yasui, T. Morino, R. Sakai, K. Tamagaki, F. Furuta, M. Kuriki, H. Matsumoto, M. Yoshioka

Polarized Sources and Targets: Proceedings of the Eleventh International Workshop     page： 138   2007

Generation of Spin Polarized Electron by Field Emission Reviewed

M. Kuwahara, T. Nakanishi, S. Okumi, M. Yamamoto, M. Miyamoto, N. Yamamoto, K. Yasui, T. Morino, R. Sakai, K. Tamagaki, K. Yamaguchi,

Polarized Sources and Targets: Proceedings of the Eleventh International Workshop     page： 152   2007

Laser forcusing system for high brightness polarized electron source for SPLEEM Reviewed

A. Mano, N. Yamamoto, K. Tamagagi, S. Okumi, M. Yamamoto, M. Kuwahara, R. Sakai, T. Morino, A. Utsu, T. Nakanishi, T. Ohshima,

AIP Conference Proceedings, PROCEEDINGS OF THE 17TH INTERNATIONAL SPIN PHYSICS SYMPOSIUM   Vol. 915   page： 1081   2007

Development of the new type polarized electron source for SPLEEM Reviewed

S. Okumi, N. Yamamoto, K. Tamagaki, A. Mano, R. Sakai, M. Yamamoto, M. Kuwahara, T. Morino, A. Utsu, T. Nakanishi, S. Kim, T. Ujihara, Y. Takeda, T. Ohshima, T. Yasue, T. koshikawa,

AIP Conference Proceedings, PROCEEDINGS OF THE 17TH INTERNATIONAL SPIN PHYSICS SYMPOSIUM   Vol. 915   page： 1085   2007

Initial emittance measurements for polarized electron gun with NEA-GaAs type photocathode Reviewed

N. Yamamono, M. Yamamono, R. Sakai, T. Nakanishi, S. Okumi, M. Kuwahara, K. Tamagaki, T. Morino, A. Utsu, A. Mano, M. Kuriki, T. Ujihara, Y. Takeda,

AIP Conference Proceedings, PROCEEDINGS OF THE 17TH INTERNATIONAL SPIN PHYSICS SYMPOSIUM   Vol. 915   page： 1071   2007

Production of high density polarized electron beam from GaAs-GaAsP superlattice photocathode Reviewed

M. Yamamono, N. Yamamono, S. Okumi, R. Sakai, M. Kuwahara, T. Morino, K. Tamagaki, A. Mano, A. Utsu, T. Nakanishi, C. Bo, T. Ujihara, Y. Takeda, M. Kuriki

AIP Conference Proceedings, PROCEEDINGS OF THE 17TH INTERNATIONAL SPIN PHYSICS SYMPOSIUM   Vol. 915   page： 1025   2007

Spin-polarized electrons extracted from GaAs tips using field emission Reviewed

M. Kuwahara, T. Morino, T. Nakanishi,

AIP Conference Proceedings, PROCEEDINGS OF THE 17TH INTERNATIONAL SPIN PHYSICS SYMPOSIUM   Vol. 915   page： 1055   2007

Thermal emittance measurements for electron beams produced from bulk and superlattice negative electron affinity photocathodes Reviewed

N. Yamamoto, M. Yamamoto, M. Kuwahara, R. Sakai, T. Morino, K. Tamagaki, A. Mano, A. Utsu, S. Okumi, T. Nakanishi, M. Kuriki, C. Bo, T. Ujihara, Y. Takeda

Journal of Applied Physics   Vol. 102   page： 024904-1-6   2007

Field Emission of Spin-Polarized Electrons Extracted from Photoexcited GaAs Tip Reviewed

M. Kuwahara, T. Nakanishi, S. Okumi, M. Yamamoto, M. Miyamoto, N. Yamamoto, K. Yasui, T. Morino, R. Sakai, K. Tamagaki, K. Yamaguchi

Japanese Journal of Applied Physics   Vol. 45 ( 8A ) page： 6245   2006

Highly polarized electrons from GaAs-GaAsP and InGaAs-AlGaAs strained superlattice photocathode Reviewed

T. Nishitani, T. Nakanishi, M. Yamamoto, S. Okumi, F. Furuta, M. Miyamoto, M. Kuwahara, N. Yamamoto, K. Naniwa, O. Watanabe, Y. Takeda, H. Kobayakawa, Y. Takashima, H. Horinaka, T. Matsuyama, K. Togawa, T. Saka, M. Tawada, T. Omori, Y. Kurihara, M. Yoshioka, K. Kato and T. Baba

Journal of Applied Physics   Vol. 97   page： 094907 1-6   2005

Properties of Field Emission Dark Current from Molybdenum and Titanium Electrodes Reviewed

F. Furuta, M. Yamamoto, T. Nakanishi, S. Okumi, T. Gotoh, M. Miyamoto, M. Kuwahara, N. Yamamoto, K. Naniwa, K. Yasui, H. Matsumoto, M. Yoshioka and K. Togawa

Proceedings of 16th International Spin Physics Symposium (SPIN2004) and Workshop on Polarized Electron Sources and Polarimeters (PESP2004)     page： 964   2005

Recent PES Photocathode R&D at Nagoya University Reviewed

M. Kuwahara, T. Nakanishi, S. Okumi, M. Yamamoto, F. Furuta, M. Miyamoto, N. Yamamoto, K. Naniwa, K. Yasui. T. Nishitani, O. Watanabe, Y. Takeda, H. Kobayakawa, Y. Takashima and K. Togawa

Proceedings of 16th International Spin Physics Symposium (SPIN2004) and Workshop on Polarized Electron Sources and Polarimeters (PESP2004)     page： 953   2005

Present Status of 200 keV Polarized Electron Gun at Nagoya University Reviewed

M. Yamamoto, N. Yamamoto, T. Nishitani, S. Okumi, F. Furuta, M. Miyamoto, M. Kuwahara, K. Naniwa and K. Yasui

Proceedings of 16th International Spin Physics Symposium (SPIN2004) and Workshop on Polarized Electron Sources and Polarimeters (PESP2004)     page： 902   2005

Reduction of field emission dark current for high-field gradient electron gun by using a molybdenum cathode and titanium anode Reviewed

F. Furuta, T. Nakanishi, S. Okumi, T. Gotou, M. Yamamoto, M. Miyamoto, M. Kuwahara, N. Yamamoto, K. Naniwa, K. Yasui, H. Matsumoto, M. Yoshioka and K. Togawa

Nuclear Instruments and Methods in Physics Research Section A   Vol. 538   page： 33   2005

Highly Polarized Electrons from GaAs-GaAsP and InGaAs-AlGaAs Strained Layer Superlattice Photocathodes

T. Nakanishi, T. Nishitani, M. Yamamoto, S. Okumi, F. Furuta, M. Kuwahara, N. Yamamoto, K. Naniwa, K. Yasui, O. Watanabe, Y. Takeda, H. Kobayakawa, Y. Takashima, H. Horinaka and T. Matsuyama

Proceedings of XXII International Linear Accelerator Conference (LINAC2004)     page： 648   2004

An Electrode with Molybdenum-Cathode and Titanium-Anode to Minimize Field Emission Dark Currents

T. Nakanishi, F. Furuta, S. Okumi, T. Gotou, M. Yamamoto, M. Kuwahara, N. Yamamoto, K. Naniwa, K. Yasui, H. Kobayakawa, Y. Takashima, H. Matsumoto, M. Yoshioka and K. Togawa

Proceedings of XXII International Linear Accelerator Conference (LINAC2004)     page： 645   2004

Ultra-High-Vacuum Problem for 200 keV Polarized Electron Gun with NEA-GaAs Photocathode

T. Nakanishi, M. Yamamoto, N. Yamamoto, S. Okumi, F. Furuta, M. Kuwahara, K. Naniwa, K. Yasui, H. Kobayakawa, Y. Takashima, H. Matsumoto, M. Kuriki and M. Yoshioka

Proceedings of XXII International Linear Accelerator Conference (LINAC2004)     page： 201   2004

Basic R&D Studies for Lower Emittance Polarized Electron Guns Reviewed

C. Suzuki, T. Nakanishi, S. Okumi, F. Furuta, K. Wada, T. Nishitani, M. Yamamoto, M. Kuwahara, T. Hirose, R. Mizuno, N. Yamamoto, H. Matsumoto, M. Yoshioka, H. Horinaka, K. Wada, T. Matsuyama and H. Kobayakawa

Proceedings of 15th International Spin Physics Symposium (SPIN2002) and Workshop on Polarized Electron Sources and Polarimeters (PESP2002) published in AIP Conference Proceedings   Vol. 675   page： 1068   2003

200 keV Polarized Electron Source at Nagoya University Reviewed

K. Wada, M. Yamamoto, T. Nakanishi, S. Okumi, T. Gotoh, C. Suzuki, F. Furuta, T. Nishitani, M. Miyamoto, M. Kuwahara, T. Hirose, R. Mizuno, N. Yamamoto, H. Matsumoto and M. Yoshioka

Proceedings of 15th International Spin Physics Symposium (SPIN2002) and Workshop on Polarized Electron Sources and Polarimeters (PESP2002) published in AIP Conference Proceedings   Vol. 675   page： 1063   2003

Emittance measurement for 200-keV-electron beam extracted from NEA-GaAs photocathode using a pepper pot method Reviewed

N. Yamamoto, M. Yamamoto, T. Nakanishi, S. Okumi, F. Furuta, T. Nishitani, M. Miyamoto, M. Kuwahara, K. Naniwa, Y. Takashima, H. Kobayakawa, M. Kuriki, H. Matsumoto, and M. Yoshioka

FREE ELECTRON LASERS 2003   Vol. II   page： 51   2003

A 200keV gun with NEA-GaAs photocathode to produce low emittance electron beam

M. Yamamoto, K. Wada, N. Yamamoto, T. Nakanishi, S. Okumi, F. Furuta, T. Nishitani, M. Miyamoto, M. Kuwahara, K. Naniwa, Y. Takashima, H. Kobayakawa, M. Kuriki, H. Matsumoto, and M. Yoshioka

FREE ELECTRON LASERS 2003   Vol. II   page： 39-40   2003

Measurement of Field Emission Dark Current from the Titanium, Copper, and Stainless Steel Electrodes under the High DC-Field Gradient Condition

F. Furuta, C. Suzuki, T. Nakanishi, S. Okumi, T. Gotou, K. Wada, M. Yamamoto, T. Nishitani, M. Miyamoto, M. Kuwahara, T. Hirose, R. Mizuno, N. Yamamoto, H. Kobayakawa, H. Matsumoto and M. Yoshioka

Proceedings of XXI International LINAC Conference (LINAC2002)     page： 431   2002

200keV Polarized Electron Source for Linear Collider

M. Yamamoto, K. Wada, T. Nakanishi, S. Okumi, C. Suzuki, F. Furuta, T. Nishitani, M. Miyamoto, M. Kuwahara, T. Hirose, R. Mizuno, N. Yamamoto, O. Watanabe, H. Kobayakawa, H. Matsumoto and M. Yoshioka

Proceedings of XXI International LINAC Conference (LINAC2002)     page： 680   2002

Charge limitation effects in photoemission from GaAsP strained layer cathode

A Subashiev, Yu Mamaev, B. Reznikov, T. Nakanishi, K. Togawa, T. Nishitani, M. Kuwahara, T. Hirose, R. Mizuno

Proceedings of the Ninth International Workshop Polarized Sources and Targets     page： 175   2002

Test of Cesium Telluride Photocathode as a Feasibility Study on Polarized RF-gun Reviewed

F. Furuta, H. Sugiyama, T. Nakanishi, S. Okumi, K. Togawa, C. Suzuki, K. Wada, M. Yamamoto, T. Nishitani, J. Watanabe, S. Kurahashi, M. Miyamoto, M. Kuwahara, R. Mizuno, T. Hirose, K. Kimura, H. Kobayakawa, Y. Takashima, M. Yoshioka and H. Matsumoto

Proceedings of 14th International Spin Physics Symposium (SPIN2000) and Workshop on Polarized Electron Sources and Polarimeters (PES2000) published in AIP Conference Proceedings   Vol. 570   page： 1015   2001

Transient phenomena of plasmons on gold nanoparticle investigated by time-resolved TEM International conference

M. Kuwahara, T. Ishida, H. Morishita, S. Kuwahara, T. Agemura

International Workshop on Advanced and In-situ Microscopies of Functional Nanomaterials and Devices (IAMNano 2023)  2023.6.29  The Japanese Society of Microscopy

Picosecond transient phenomena in an electron energy-loss spectrum using 100-kV time-resolved transmission electron microscopy

M. Kuwahara, S. Makimoto, H. Yamaguchi, S. Nakane, K. Nagami, T. Ishida, K. Saitoh, H. Morishita, I. Nagaoki, S. Kuwahara, T. Agemura

Th 79th Annual Meeting of the Japanese Society of Microscopy  2023.6.28 

Time-Resolved Measurement in TEM Using a Semiconductor Photocathode Invited International conference

Makoto Kuwahara

4th Annual Joint Workshop Microscopy Society of Canada & Japanese Society of Microscopy  2023.6.12  Microscopy Society of Canada - Société du Microscopie du Canada (MSC-SMC)

"量子もつれ”の基礎と電子顕微鏡における量子干渉実験の可能性 Invited

桑原真人

顕微鏡学会電子光学設計技術分科会 第９回研究会  2023.2.14  顕微鏡学会電子光学設計技術分科会

Stroboscopic measurements in transmission electron microscopy using photoemission electron gun

2022.10.11 

Time-resolved transmission electron microscopy in material science Invited

Makoto Kuwahara

Japan Geoscience Union Meeting 2022  2022.5.23  Japan Geoscience Union

高スピン偏極パルス電子源を有する間分解透過電子顕微鏡の開発 Invited

桑原真人

日本顕微鏡学会第７８回学術講演会  2022.5.11  日本顕微鏡学会

NEA半導体フォトカソードを応用した時間分解透過電子顕微鏡の開発と応用 Invited

桑原真人

次世代真空エレクトロニクス研究会 第4回定例研究会   2022.3.9  次世代真空エレクトロニクス研究会

Recent progress of time-resolved measurements in the spin-polarized pulse-TEM Invited

Makoto Kuwahara

2022.3.3 

Time-resolved measurement in ultrafast transmission electron microscopy International conference

M. Kuwahara, K. Nakakura, M. Furui, T. Ishida, K. Saitoh

International Conference for Materials and Systems for Sustainability 2021  2021.11.5  Institute of Materials and Systems for Sustainability, Nagoya University

光陰極電子源を用いた100kVパルス透過電子顕微鏡による時間分解計測

桑原真人, 水野りら, 中蔵虎二郎, 古井雅人, 森下英郎, 石田高史, 長沖功, 揚村寿英

第８２回応用物理学会秋季学術講演会  2021.9.10  応用物理学会

Coherence in pulsed TEM using NEA semiconductor photocathode and its applications to time-resolved measurement Invited

Makoto Kuwahara, Rina Yokoi, Wataru Nagata, Masato Furui, Kojiro Nakakura, Takafumi Ishida, Koh Saitoh, Nobuo Tanaka

The 77th Annual Meeting of the Japanese Society of Microscopy  2021.6.16  The Japanese Society of Microscopy

Time-resolved measurement in pulsed transmission electron microscopy Invited International conference

Makoto Kuwahara, Lira Mizuno, Rina Yokoi, Yuya Yoshida, Shota Kuwahara, Takafumi Ishida, Koh Saitoh, Nobuo Tanaka

The 77th Annual Meeting of the Japanese Society of Microscopy  2021.6.16  The Japanese Society of Microscopy

Time-resoleved transmission electron microscopy toward operando-measurement in geoscience Invited

Makoto Kuwahara

Japan Geoscience Union Meeting 2021  2021.6.3  Japan Geoscience Union

時間分解電子顕微鏡の開発と応用 Invited

桑原真人

第２回次世代電子顕微鏡法講演会  2021.2.16  東京大学

コヒーレント偏極電子線を用いたパルス電子顕微鏡と量子統計 Invited

桑原真人

電子光学設計技術分科会　第7回研究会 

High-brightness pulsed electron microscopy toward advanced measurement of time-evolution in nanomaterials Invited International conference

M. Kuwahara, R. Yokoi, L. Mizuno, W. Nagata, Y. Yoshida, T. Ishida, T. Ujihara, K. Saitoh

International Conference on Materials and Systems for Sustainability 2019 (ICMaSS)  2019.11.3 

Novel Transmission Electron Microscope Using High Brightness Pulsed Beam Emitted from NEA Photocathode International conference

R. Yokoi, T. Ishida, M. Kuwahara, K. Saitoh

International Conference on Materials and Systems for Sustainability 2019 (ICMaSS)  2019.11.2 

Fine structure of surface plasmon on Au triangular nanoprisms via STEM-EELS International conference

L. Mizuno, M. Kuwahara, S. Kuwahara, T. Ishida, K. Saitoh

International Conference on Materials and Systems for Sustainability 2019 (ICMaSS) 

高い縮退度を有する超短パルス電子線による顕微分析手法の開発 Invited

桑原真人

第2回表面真空学会若手部会研究会  2019.10.31 

コヒーレント偏極電子線をもちいた二次干渉実験

桑原 真人,横井 里奈,永田 渉,石田 高史，

第80回応用物理学会秋季学術講演会  2019.9.21 

120 kVフォトカソード電子銃を用いた⾼輝度パルス透過電⼦顕微鏡の開発

横井 里奈, 永田 渉, 石田 高史, 長沖 功, 揚村 寿英, 桑原 真人, 齋藤 晃

第80回応用物理学会秋季学術講演会  2019.9.21 

STEM-EELSを用いた周期閉じ込め構造に誘起される表面プラズモンモードの研究

水野りら，桑原真人，石田高史，齋藤晃

日本物理学会2019年秋季大会（物性） 

超高速時間分解位相像を実現するコヒーレントパルス電子線 Invited

桑原真人，横井里奈，水野りら，永田渉，石田高史，齋藤晃

第４回 「表面界面の機能創成とデバイス応用」セミナー 

High-Brightness Bunched Electrons Using a Semiconductor Photocathode and Optimized Acceleration Field International conference

R. Yokoi, T. Ishida, M. Kuwahara, K. Saitoh

Microscopy & Microanalysis 2019 (M&M 2019) 

Fine Structure of Plasmon Hybridization on Au nanotriangles via STEM-EELS International conference

L. Mizuno, M. Kuwahara, S. Kuwahara, T. Ishida, K. Saitoh

Microscopy & Microanalysis 2019 (M&M 2019) 

Spin-Polarized Pulse-TEM Invited International conference

Makoto Kuwahara

Germany-Japan Joint Seminar on Advanced Electron Microscopy and its Application  2019.6.19 

金ナノプレートの局在表面プラズモンをもちいたカップリング効果の研究

水野りら，石田高史，桑原彰太，桑原真人，齋藤 晃

日本顕微鏡学会第75回学術講演会 

高密度パルス電子線発生を可能にする120kVパルス透過電子顕微鏡の開発

横井里奈，永田 渉，水野りら，石田高史，桑原真人，齋藤 晃

日本顕微鏡学会第75回学術講演会 

Co-Zn-Fe合金の電子顕微鏡学的評価

冨樫将孝，石田高史，小松正弥，長尾全寛，肖 英紀, 桑原真人，齋藤 晃

日本顕微鏡学会第75回学術講演会 

時間分解EELSによる光励起したカーボンナノチューブのC-Kエッジの測定

村山恒介，横井里奈，桑原真人，石田高史，齋藤 晃

日本物理学会第74回年次大会(2019年春季) 

透過型電子顕微鏡を用いたCo-Zn-Fe合金の磁気構造観察

冨樫将孝，石田高史，小松正弥，長尾全寛，肖 英紀，桑原真人，齋藤 晃

日本物理学会第74回年次大会(2019年春季） 

STEM-EELSを用いた金ナノプレートの局在表面プラズモン及びそのカップリング効果析

水野りら，石田高史，桑原彰太，桑原真人，齋藤 晃

日本物理学会第74回年次大会(2019年春季） 

高密度パルス電子線発生のための120kVフォトカソード電子銃の開発

横井里奈，水野りら，篠崎 暉，石田高史，桑原真人，齋藤 晃

日本物理学会第74回年次大会(2019年春季) 

Pt/Co/Ta磁性多層膜の作製と電子顕微鏡を用いた磁気構造解析

濱中幸祐，冨樫将孝，桑原真人，石田高史，齋藤 晃

日本物理学会第74回年次大会(2019年春季 

Semiconductor photocathode in a transmission electron microscope Invited International conference

M. Kuwahara

Photocathode Physics for Photoinjectors 2018 

Magnetic structures in Nano-Fabricated Pt/Co/Ta Multilayer Film International conference

K. Hamanaka,H. Suzuki,T. Ishida,M. Kuwahara,K. Saitoh

19TH INTERNATIONAL MICROSCOPY CONGRESS 

TEM-EELS of Photo-excited MWCNTs Using a Pulsed Electron Beam International conference

K. Murayama,M. Kuwahara,T. Ishida,K. Saitoh

19TH INTERNATIONAL MICROSCOPY CONGRESS 

スピン偏極パルスTEMの開発とそのコヒーレンス Invited

桑原真人

第63回化合物新磁性材料専門研究会 

Coherent pulsed beam in a spin-polarized TEM using an NEA photocathode Invited International conference

Makoto Kuwahara

The 31st International Vacuum Nanoelectronics Conference  

Coherent bunched beam in a spin-polarized TEM using an NEA photocathode Invited International conference

M. Kuwahara

RIKEN SEMINAR 

NEA半導体フォトカソードを応用した電子顕微鏡開発とその性能 Invited

桑原真人

日本学術振興会第１３２委員会　第２３１回研究会 

Development of pulsed-TEM using a spin-polarized electron source and its application to ultrafast time-resolved measurement in energy and real spaces Invited

カーボンナノチューブのTEM-EELSにおける光励起依存性の研究

村山恒介，桑原真人，石田高史，齋藤 晃

日本顕微鏡学会第74回学術講演会 

Pt/Co/Ta磁性多層膜試料の作製と電子顕微鏡学的評価

濱中幸祐，鈴木潤士，石田高史，桑原真人，齋藤 晃

日本顕微鏡学会第74回学術講演会 

スピン偏極電子線をもちいた電子らせん波の生成

冨樫将孝，桑原真人，齋藤 晃

日本顕微鏡学会第74回学術講演会 

STEM-EELSを用いた金八面体ナノ粒子の局在表面プラズモンの研究

水野りら，桑原真人，石田高史，亀山達矢，佐藤健太郎，齋藤 晃，鳥本 司

日本顕微鏡学会第74回学術講演会 

電子線ホログラフィーを用いたPt/Co/Ta多層膜ディスクの磁気構造解析

桑原 真人, 鈴木潤士, 濱中幸佑, 石田高史, 齋藤 晃

日本物理学会 第73回年次大会 

NEA半導体光陰極から放出される電子のもつエミッタンスと高い空間コヒーレンス

桑原真人

第65回応用物理学会春季学術講演会 

NEA半導体光陰極を応用した透過電子顕微鏡における時空間コヒーレンス Invited

桑原真人

第１５ 回真空ナノエレクトロニスシンポジウム 

コヒーレントスピン偏極パルス電子線による時間分解TEM観察 Invited

桑原真人

「その場観察研究部会」第２回 研究会 

Coherent bunched electron beam extracted from a semiconductor photocathode in a transmission electron microscope Invited International conference

M. Kuwahara, K. Aoki, K. Murayama, H. Asano, T. Ujihara, K. Saitoh and N. Tanaka

Intensity interference performed in spin-polarized transmission electron microscope Invited

Coherence of picosecond bunched electrons emitted from a semiconductor photocathode in transmission electron microscope Invited International conference

M. Kuwahara, K. Aoki, H. Asano, T. Ujihara, N. Tanaka and K. Saitoh

Electron Microscopy with High Temporal Resolution 

Time-resolved TEM-EELS using a pulsed beam extracted from a semiconductor photocathode Invited International conference

M. Kuwahara, K. Aoki, F. Ichihashi, T. Ujihara, N. Tanaka and K. Saitoh

8th International Workshop on Electron Energy Loss Spectroscopy and Related Techniques 

Development of time-resolved TEM using a coherent pulsed beam emitted from an NEA photocathode Invited

M. Kuwahara, K. Aoki, T. Ujihara, K. Saitoh, N. Tanaka

Beam properties of picosecond bunched electrons in a time-resolved TEM using a semiconductor photocathode

M. Kuwahara, K. Aoki, Y. Nambo, T. Ujihara, N. Tanaka, K. Saitoh

Coherence Volume of Electron Wavepacket Emitted from a Semiconductor Photocathode in a Transmission Electron Microscope Invited International conference

M. Kuwahara, K. Aoki, H. Asano, T. Ujihara, N. Tanaka and K. Saitoh

Electron Holography Workshop 2017 

半導体光陰極を用いた次世代透過電子顕微鏡の開発 Invited

桑原真人

ナノテスティング学会電子線応用技術研究会第９回研究会 

半導体フォトカソードを用いたパルス透過電子顕微鏡 Invited

桑原真人

日本顕微鏡学会関西支部・平成 28 年度特別講演会 

半導体光陰極を利用したTEMにおける電子波特性 Invited

桑原真人、宇治原徹、田中信夫、齋藤晃

日本顕微鏡学会・電子光学設計技術研究部会・平成２８年度研究会 

半導体光陰極を用いた次世代透過電子顕微鏡の開発 Invited

桑原真人, 青木幸太, 鈴木潤士, 宇治原徹, 浅野秀文, 齋藤晃, 田中信夫

第７７回応用物理学会秋季大会 

コヒーレントパルス透過電子顕微鏡の光励起および緩和過程観察への応用 Invited

桑原真人, 青木幸太, 宇治原徹, 浅野秀文, 齋藤晃, 田中信夫

日本物理学会２０１６秋季大会 

Coherence of a pulsed electron beam extracted from a semiconductor photocathode in transmission electron microscope Invited International conference

M. Kuwahara, K. Aoki, H. Suzuki, H. Asano, T. Ujihara, K. Saitoh, N. Tanaka

The 16th European Microscopy Congress 

光陰極平面から放出されるパルス電子線の空間電荷効果

桑原真人、青木幸太、鈴木潤士、宇治原徹、齋藤晃、田中信夫

日本顕微鏡学会 第72回学術講演会 

コヒーレントスピン偏極電子線をもちいた時間分解顕微法の開発

桑原真人

日本物理学会第７１回年次大会 

Spinor interfernce in transmission electron microscope

M. Kuwahara, K. Sameshima, K. Aoki, H. Asano, T> Ujihara, K. Saitoh, N. Tanaka

Internatinal Symposium on EcoTopia Science 

Time-resolved LVTEM using spin-polarized electron beam International conference

Makoto Kuwahara

Young Scientists Satellite Meeting in The 2nd East-Asia Microscopy Conference 

Coherences of spin-polarized and pulsed electron beam extracted from a semiconductor photocathode in TEM International conference

Makoto Kuwahara

The 2nd East-Asia Microscopy Conference 

スピン偏極透過電子顕微鏡が拓く材料解析の可能性

桑原真人

日本物理学会2015年秋季大会 

スピン偏極電子源とその磁性体観察の可能性

桑原真人

第26回基礎セミナー「ナノスピン構造の作製・評価技術」 

負の電子親和性をもつエミッタから放出される 電子の性質

桑原 真人，南保 由人，齋藤 晃，浅野 秀文，宇 治原 徹，田中 信夫

日本顕微鏡学会第71回学術講演会 

スピン偏極パルスTEMにおけるコヒーレンス

[1] 桑原真人、南保由人、鮫島健輔、浅野秀文、宇治原徹、田中信夫

2014年度 超高分解能顕微鏡法分科会 研究会 

スピン偏極透過電子顕微鏡

桑原 真人、南保 由人、齋藤晃、宇治原徹、田中信夫

荷電粒子ビームの工業への応用第132 委員会 第212回研究会 

Spatial and Temporal Coherences in Spin-Polarized Transmission Electron Microscopy International conference

M, Kuwahara, S. Kusunoki, Y. Nambo, K. Sameshima, K. Saitoh, T. Ujihara, H. Asano, Y. Takeda, N. Tanaka

18th International Microscopy Congress 

Sub-picosencond electron beam and femtosecond optical pump system in spin-polarized TEM International conference

M, Kuwahara, S. Kusunoki, Y. Nambo, K. Sameshima, K. Saitoh, T. Ujihara, H. Asano, Y. Takeda, N. Tanaka

18th International Microscopy Congress 

スピン偏極パルスTEMにおけるコヒーレンス

桑原真人、楠聡一郎、南保由人、 金秀光、齋藤晃、浅野秀文、宇治原徹、竹田美和、田中信夫

日本放射光学会第６回若手研究会 

スピン偏極TEMにおける偏極電子線のコヒーレンス評価

桑原真人、楠聡一郎、南保由人、浅野秀文、齋藤晃、宇治原徹、竹田美和、田中信夫

日本顕微鏡学会　第70回学術講演会 

スピン偏極パルスTEMによるピコ秒パルス電子線発生

桑原真人、南保由人、浅野秀文、齋藤晃、宇治原徹、田中信夫

日本顕微鏡学会　第70回学術講演会 

Spatial and Temporal Coherences in Spin-Polarized Transmission Electron Microscopy International conference

M. Kuwahara, S. Kusunoki, Y. Nambo, K. Sameshima, K. Saitoh, T. Ujihara, H. Asano, Y. Takeda, N. Tanaka

The 4th International Symposium on Advanced Microscopy and Theoretical Calculations 

半導体光陰極を用いたTEMの空間コヒーレンス測定

桑原真人、南保由人、 鮫島健輔、 楠聡一郎、齋藤晃、宇治原徹、浅野秀文、竹田美和、田中信夫

日本物理学会　第69回年次大会 

Possibility of Time-Resolved Measurement in Spin-Polarized TEM International conference

M. Kuwahara, Y. Nambo, K. Sameshima, K. Saitoh, T. Ujihara, H. Asano, Y. Takeda and N. Tanaka,

International Symposium on EcoTopia Science 2013 

Development of spin-polarized transmission electron microscope International conference

M. Kuwahara, S. Kusunoki, Y. Nambo, K. Sameshima, K. Saitoh, T. Ujihara, H Asano, Y Takeda, T Nakanishi and N Tanaka,

9th International Symposium on Atomic Level Characterizations for New Materials and Devices `13 

スピン偏極パルスTEM

桑原真人, 楠総一郎, 南保由人, 鮫島健輔, 齋藤晃, 宇治原徹, 浅野秀文, 竹田美和, 田中信夫

日本顕微鏡学会第57回シンポジウム 

スピン偏極パルスTEMによるパルス同期TEM像の取得

桑原 真人，南保 由人，楠 聡一郎，齋藤 晃，宇治原 徹，竹田 美和，中西 彊，田中 信夫

日本顕微鏡学会第69回学術講演会 

Development of Spin-Polarized Transmission Electron Microscope International conference

Makoto Kuwahara

NCEM Seminars 

Spin-polarized transmission electron microscope toward an analysis of sub-picosecond dynamics International conference

Makoto Kuwahara

The 3rd Banff Meeting on Structural Dynamics Ultrafast Dynamics with X-Ray and Electrons 

Development of spin-polarized transmission electron microscope International conference

Makoto Kuwahara

Condensed-matter Physics & Materials Science Seminar 

スピン偏極透過電子顕微鏡の開発とその性能

桑原真人、楠聡一郎、宇治原徹、浅野秀文、竹田美和、中西彊、齋藤晃、田中信夫

日本顕微鏡学会第68回学術講演会 

Spin-polarized TEM using an NEA photocathode International conference

M. Kuwahara, S. Kusunoki, K. Saitoh, T. Ujihara, and N. Tanaka

Injection system of spin-polarized transmission microscopy

International Symposium on EcoTopia Science 2011 

Development of spin-polarized and pulsed TEM International conference

M. Kuwahara, T. Nakanishi, Y. Takeda, K. Saito, T. Ujihara, H. Asano, and N. Tanaka

Electron Microscopy and Analysis Group Conference 2011 

スピン偏極パルスTEM用電子源と照射系の開発

桑原真人、中西彊、竹田美和、浅野秀文、齋藤晃、宇治原徹、田中信夫

日本顕微鏡学会第67回学術講演会 

Superlattice photocathode development for low emittance International conference

Photocathode Physics for Photoinjectors 

Pulsed spin-polarized electron source toward a transmission electron microscope International conference

M. Kuwahara, T. Nakanishi, N. Tanaka, Y. Takeda, H. Asano, K. Saito, T. Ujihara

The 17th IFSM International Microscopy Congress 

スピン偏極パルスTEM用電子源の特性評価

桒原 真人, 中西 彊, 田中 信夫, 竹田 美和, 浅野 秀文, 斎藤 晃, 宇治原 徹

日本顕微鏡学会66回学術講演会 

コヒーレント偏極電子線による時間相関測定

2015.4 - 2017.3

科学研究費補助金 

非線形光学効果を応用したスピン偏極量子ビーム源の開発

2013.4 - 2016.3

科学研究費補助金  若手研究(A)

Development of Spin-Polarized and Pulsed TEM for Nano-Spin Analysis

2012.1

Grant-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research(S)

高輝度フォトカソード電子源の高効率化とコヒーレンスの応用

2010.4 - 2012.3

科学研究費補助金  若手研究（Ｂ）　22740157

超低エミッタンスビームを実現するカーボンナノチューブ-スピン偏極電子源の開発

2005.4 - 2007.3

科学研究費補助金  特別研究員奨励費　Ｈ１７-７６１５